TFT_4DGL_Graphics.cpp

00001 //
00002 // TFT_4DGL is a class to drive 4D Systems TFT touch screens
00003 //
00004 // Copyright (C) <2010> Stephane ROCHON <stephane.rochon at free.fr>
00005 //
00006 // TFT_4DGL is free software: you can redistribute it and/or modify
00007 // it under the terms of the GNU General Public License as published by
00008 // the Free Software Foundation, either version 3 of the License, or
00009 // (at your option) any later version.
00010 //
00011 // TFT_4DGL is distributed in the hope that it will be useful,
00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014 // GNU General Public License for more details.
00015 //
00016 // You should have received a copy of the GNU General Public License
00017 // along with TFT_4DGL.  If not, see <http://www.gnu.org/licenses/>.
00018 
00019 #include "mbed.h"
00020 #include "TFT_4DGL.h"
00021 
00022 
00023 //****************************************************************************************************
00024 void TFT_4DGL :: circle(int x, int y , int radius, int color) {   // draw a circle in (x,y)
00025     char command[9]= "";
00026 
00027     command[0] = CIRCLE;
00028 
00029     command[1] = (x >> 8) & 0xFF;
00030     command[2] = x & 0xFF;
00031 
00032     command[3] = (y >> 8) & 0xFF;
00033     command[4] = y & 0xFF;
00034 
00035     command[5] = (radius >> 8) & 0xFF;
00036     command[6] = radius & 0xFF;
00037 
00038     int red5   = (color >> (16 + 3)) & 0x1F;              // get red on 5 bits
00039     int green6 = (color >> (8 + 2))  & 0x3F;              // get green on 6 bits
00040     int blue5  = (color >> (0 + 3))  & 0x1F;              // get blue on 5 bits
00041 
00042     command[7] = ((red5 << 3)   + (green6 >> 3)) & 0xFF;  // first part of 16 bits color
00043     command[8] = ((green6 << 5) + (blue5 >>  0)) & 0xFF;  // second part of 16 bits color
00044 
00045     writeCOMMAND(command, 9);
00046 }
00047 
00048 //****************************************************************************************************
00049 void TFT_4DGL :: triangle(int x1, int y1 , int x2, int y2, int x3, int y3, int color) {   // draw a traingle
00050     char command[15]= "";
00051 
00052     command[0] = TRIANGLE;
00053 
00054     command[1] = (x1 >> 8) & 0xFF;
00055     command[2] = x1 & 0xFF;
00056 
00057     command[3] = (y1 >> 8) & 0xFF;
00058     command[4] = y1 & 0xFF;
00059 
00060     command[5] = (x2 >> 8) & 0xFF;
00061     command[6] = x2 & 0xFF;
00062 
00063     command[7] = (y2 >> 8) & 0xFF;
00064     command[8] = y2 & 0xFF;
00065 
00066     command[9] = (x3 >> 8) & 0xFF;
00067     command[10] = x3 & 0xFF;
00068 
00069     command[11] = (y3 >> 8) & 0xFF;
00070     command[12] = y3 & 0xFF;
00071 
00072     int red5   = (color >> (16 + 3)) & 0x1F;               // get red on 5 bits
00073     int green6 = (color >> (8 + 2))  & 0x3F;               // get green on 6 bits
00074     int blue5  = (color >> (0 + 3))  & 0x1F;               // get blue on 5 bits
00075 
00076     command[13] = ((red5 << 3)   + (green6 >> 3)) & 0xFF;  // first part of 16 bits color
00077     command[14] = ((green6 << 5) + (blue5 >>  0)) & 0xFF;  // second part of 16 bits color
00078 
00079     writeCOMMAND(command, 15);
00080 }
00081 
00082 //****************************************************************************************************
00083 void TFT_4DGL :: line(int x1, int y1 , int x2, int y2, int color) {   // draw a line
00084     char command[11]= "";
00085 
00086     command[0] = LINE;
00087 
00088     command[1] = (x1 >> 8) & 0xFF;
00089     command[2] = x1 & 0xFF;
00090 
00091     command[3] = (y1 >> 8) & 0xFF;
00092     command[4] = y1 & 0xFF;
00093 
00094     command[5] = (x2 >> 8) & 0xFF;
00095     command[6] = x2 & 0xFF;
00096 
00097     command[7] = (y2 >> 8) & 0xFF;
00098     command[8] = y2 & 0xFF;
00099 
00100     int red5   = (color >> (16 + 3)) & 0x1F;               // get red on 5 bits
00101     int green6 = (color >> (8 + 2))  & 0x3F;               // get green on 6 bits
00102     int blue5  = (color >> (0 + 3))  & 0x1F;               // get blue on 5 bits
00103 
00104     command[9] = ((red5 << 3)   + (green6 >> 3)) & 0xFF;   // first part of 16 bits color
00105     command[10] = ((green6 << 5) + (blue5 >>  0)) & 0xFF;  // second part of 16 bits color
00106 
00107     writeCOMMAND(command, 11);
00108 }
00109 
00110 //****************************************************************************************************
00111 void TFT_4DGL :: rectangle(int x1, int y1 , int x2, int y2, int color) {   // draw a rectangle
00112     char command[11]= "";
00113 
00114     command[0] = RECTANGLE;
00115 
00116     command[1] = (x1 >> 8) & 0xFF;
00117     command[2] = x1 & 0xFF;
00118 
00119     command[3] = (y1 >> 8) & 0xFF;
00120     command[4] = y1 & 0xFF;
00121 
00122     command[5] = (x2 >> 8) & 0xFF;
00123     command[6] = x2 & 0xFF;
00124 
00125     command[7] = (y2 >> 8) & 0xFF;
00126     command[8] = y2 & 0xFF;
00127 
00128     int red5   = (color >> (16 + 3)) & 0x1F;               // get red on 5 bits
00129     int green6 = (color >> (8 + 2))  & 0x3F;               // get green on 6 bits
00130     int blue5  = (color >> (0 + 3))  & 0x1F;               // get blue on 5 bits
00131 
00132     command[9] = ((red5 << 3)   + (green6 >> 3)) & 0xFF;   // first part of 16 bits color
00133     command[10] = ((green6 << 5) + (blue5 >>  0)) & 0xFF;  // second part of 16 bits color
00134 
00135     writeCOMMAND(command, 11);
00136 }
00137 
00138 //****************************************************************************************************
00139 void TFT_4DGL :: ellipse(int x, int y , int radius_x, int radius_y, int color) {   // draw an ellipse
00140     char command[11]= "";
00141 
00142     command[0] = ELLIPSE;
00143 
00144     command[1] = (x >> 8) & 0xFF;
00145     command[2] = x & 0xFF;
00146 
00147     command[3] = (y >> 8) & 0xFF;
00148     command[4] = y & 0xFF;
00149 
00150     command[5] = (radius_x >> 8) & 0xFF;
00151     command[6] = radius_x & 0xFF;
00152 
00153     command[7] = (radius_y >> 8) & 0xFF;
00154     command[8] = radius_y & 0xFF;
00155 
00156     int red5   = (color >> (16 + 3)) & 0x1F;               // get red on 5 bits
00157     int green6 = (color >> (8 + 2))  & 0x3F;               // get green on 6 bits
00158     int blue5  = (color >> (0 + 3))  & 0x1F;               // get blue on 5 bits
00159 
00160     command[9] = ((red5 << 3)   + (green6 >> 3)) & 0xFF;   // first part of 16 bits color
00161     command[10] = ((green6 << 5) + (blue5 >>  0)) & 0xFF;  // second part of 16 bits color
00162 
00163     writeCOMMAND(command, 11);
00164 }
00165 
00166 //****************************************************************************************************
00167 void TFT_4DGL :: pixel(int x, int y, int color) {   // draw a pixel
00168     char command[7]= "";
00169 
00170     command[0] = PIXEL;
00171 
00172     command[1] = (x >> 8) & 0xFF;
00173     command[2] = x & 0xFF;
00174 
00175     command[3] = (y >> 8) & 0xFF;
00176     command[4] = y & 0xFF;
00177 
00178     int red5   = (color >> (16 + 3)) & 0x1F;              // get red on 5 bits
00179     int green6 = (color >> (8 + 2))  & 0x3F;              // get green on 6 bits
00180     int blue5  = (color >> (0 + 3))  & 0x1F;              // get blue on 5 bits
00181 
00182     command[5] = ((red5 << 3)   + (green6 >> 3)) & 0xFF;  // first part of 16 bits color
00183     command[6] = ((green6 << 5) + (blue5 >>  0)) & 0xFF;  // second part of 16 bits color
00184 
00185     writeCOMMAND(command, 7);
00186 }
00187 
00188 //******************************************************************************************************
00189 int TFT_4DGL :: read_pixel(int x, int y) { // read screen info and populate data
00190 
00191     char command[5]= "";
00192 
00193     command[0] = READPIXEL;
00194 
00195     command[1] = (x >> 8) & 0xFF;
00196     command[2] = x & 0xFF;
00197 
00198     command[3] = (y >> 8) & 0xFF;
00199     command[4] = y & 0xFF;
00200 
00201     int i, temp = 0, color = 0, resp = 0;
00202     char response[2] = "";
00203 
00204     freeBUFFER();
00205 
00206     for (i = 0; i < 5; i++) {                   // send all chars to serial port
00207         writeBYTE(command[i]);
00208     }
00209 
00210     while (!_cmd.readable()) wait_ms(TEMPO);    // wait for screen answer
00211 
00212     while (_cmd.readable()) {
00213         temp = _cmd.getc();
00214         response[resp++] = (char)temp;
00215     }
00216 
00217     color = ((response[0] << 8) + response[1]);
00218 
00219     return color; // WARNING : this is 16bits color, not 24bits... need to be fixed
00220 }
00221 
00222 //******************************************************************************************************
00223 void TFT_4DGL :: screen_copy(int xs, int ys , int xd, int yd , int width, int height) {
00224 
00225     char command[13]= "";
00226 
00227     command[0] = SCREENCOPY;
00228 
00229     command[1] = (xs >> 8) & 0xFF;
00230     command[2] = xs & 0xFF;
00231 
00232     command[3] = (ys >> 8) & 0xFF;
00233     command[4] = ys & 0xFF;
00234 
00235     command[5] = (xd >> 8) & 0xFF;
00236     command[6] = xd & 0xFF;
00237 
00238     command[7] = (yd >> 8) & 0xFF;
00239     command[8] = yd & 0xFF;
00240 
00241     command[9] = (width >> 8) & 0xFF;
00242     command[10] = width & 0xFF;
00243 
00244     command[11] = (height >> 8) & 0xFF;
00245     command[12] = height & 0xFF;
00246 
00247     writeCOMMAND(command, 13);
00248 }
00249 
00250 //****************************************************************************************************
00251 void TFT_4DGL :: pen_size(char mode) {   // set pen to SOLID or WIREFRAME
00252     char command[2]= "";
00253 
00254     command[0] = PENSIZE;
00255     command[1] = mode;
00256 
00257     writeCOMMAND(command, 2);
00258 }
00259 
00260 //****************************************************************************************************
00261 // This plays a .wav file from the FAT partition of an uSD Card
00262 // Not really recommended as the speaker on the uLCD-32PT is really bad!
00263 //****************************************************************************************************
00264 void TFT_4DGL :: SD_Card_Wav(char *Filename) {  
00265     char command[21]= "";
00266     int Lgt=0;
00267 
00268     command[0] = 0x40;      //ext_cmd
00269     command[1] = 0x6C;      //Play Audio
00270     command[2] = 0x01;      //Option 0x00=Return at end, 0x01=Return now, 0x02=Stop, 0x03=Pause, 0x04=Resume, 0x05=Loop.        
00271     for(int i=0;Filename[i]!=0x00;i++){
00272         command[i+3] = Filename[i];
00273         Lgt = i;
00274     }    
00275     command[Lgt+4] = 0x2E;      //.
00276     command[Lgt+5] = 0x77;      //w
00277     command[Lgt+6] = 0x61;      //a
00278     command[Lgt+7] = 0x76;      //v
00279     command[Lgt+8] = 0x00;      //terminator
00280     
00281     writeCOMMAND(command, Lgt+9);
00282 }
00283 
00284 //****************************************************************************************************
00285 // This sets the volume for the speaker on the uLCD-32PT
00286 //****************************************************************************************************
00287 void TFT_4DGL :: Set_Volume(char vol) {  
00288     
00289     char command[2]= "";   
00290     
00291     command[0] = 0x76;      //cmd
00292     command[1] = vol;       //set volume
00293     
00294     writeCOMMAND(command, 2);
00295 }
00296 
00297 //****************************************************************************************************
00298 // This displays an image on the screen that is stored on the FAT partition of an uSD Card
00299 // Sent Filename, X-pos, Y-pos, Sector Address - Display from the RAW partition is quicker
00300 //****************************************************************************************************
00301 void TFT_4DGL :: uSD_FAT_Image(char *Filename, int x, int y, long s) {  
00302     char X_MSB, X_LSB, Y_MSB, Y_LSB, S0, S1, S2, S3;
00303     char command[25]= "";
00304     int Lgt=0;
00305     
00306     X_LSB = x&0x00FF;
00307     X_MSB = (x >> 8); 
00308     Y_LSB = y&0x00FF;
00309     Y_MSB = (y >> 8);
00310     
00311     S0 = (s >> 20)&0x000000FF;
00312     S1 = (s >> 16)&0x0000FF;
00313     S2 = (s >> 8)&0x0000FF; 
00314     S3 = s&0x0000FF;;
00315     
00316     command[0] = '@';         //ext_cmd
00317     command[1] = 'm';         //FAT Image    
00318     for(int i=0;Filename[i]!=0x00;i++){
00319         command[i+2] = Filename[i];
00320         Lgt = i;
00321     }  
00322     command[Lgt+3] = '.';      //.
00323     command[Lgt+4] = 'G';      //G
00324     command[Lgt+5] = 'C';      //C
00325     command[Lgt+6] = 'I';      //I
00326     command[Lgt+7] = 0x00;     //Terminator
00327     command[Lgt+8] = X_MSB;    //X-Position MSB
00328     command[Lgt+9] = X_LSB;    //X-Position LSB
00329     command[Lgt+10] = Y_MSB;   //Y-Position MSB
00330     command[Lgt+11] = Y_LSB;   //Y-Position LSB
00331     command[Lgt+12] = S0;      //Sector Address 4 bytes
00332     command[Lgt+13] = S1;      
00333     command[Lgt+14] = S2;      
00334     command[Lgt+15] = S3;      
00335     
00336     writeCOMMAND(command, Lgt+16);
00337 }
00338 
00339 //****************************************************************************************************
00340 // This displays an image on the screen in the NEW FORMAT
00341 // Sent X-pos, Y-pos, Sector Address - This is the recommended way to display images
00342 //****************************************************************************************************
00343 void TFT_4DGL :: uSD_Image(int x, int y, long s) {  
00344     char S1, S2, S3;
00345     char X_MSB, X_LSB, Y_MSB, Y_LSB;
00346     char command[9]= "";
00347     
00348     X_LSB = x&0x00FF;           //Work out the x position
00349     X_MSB = (x >> 8); 
00350     Y_LSB = y&0x00FF;           //Work out the y position
00351     Y_MSB = (y >> 8);
00352     
00353     S1 = (s >> 16)&0x0000FF;    //Work out the sector address
00354     S2 = (s >> 8)&0x0000FF; 
00355     S3 = s&0x0000FF;
00356 
00357     command[0] = 0x40;          //ext_cmd
00358     command[1] = 0x49;          //Display image
00359     command[2] = X_MSB;         //X position - 2 bytes    
00360     command[3] = X_LSB;
00361     command[4] = Y_MSB;         //Y position - 2 bytes
00362     command[5] = Y_LSB;
00363     command[6] = S1;            //Sector address - 3 bytes
00364     command[7] = S2;
00365     command[8] = S3;
00366     
00367     writeCOMMAND(command, 9);
00368 }
00369 
00370 //****************************************************************************************************
00371 // This displays an video on the screen in the NEW FORMAT
00372 // Sent X-pos, Y-pos, Sector Address - This is the recommended way to display video
00373 //****************************************************************************************************
00374 void TFT_4DGL :: uSD_Video(int x, int y, long s) {  
00375     char S1, S2, S3;
00376     char X_MSB, X_LSB, Y_MSB, Y_LSB;
00377     char command[10]= "";
00378     
00379     X_LSB = x&0x00FF;
00380     X_MSB = (x >> 8); 
00381     Y_LSB = y&0x00FF;
00382     Y_MSB = (y >> 8);
00383     
00384     S1 = (s >> 16)&0x0000FF;
00385     S2 = (s >> 8)&0x0000FF; 
00386     S3 = s&0x0000FF;
00387 
00388     command[0] = 0x40;      //ext_cmd
00389     command[1] = 0x56;      //Display video
00390     command[2] = X_MSB;     //X position - 2 bytes    
00391     command[3] = X_LSB;
00392     command[4] = Y_MSB;     //Y position - 2 bytes
00393     command[5] = Y_LSB;
00394     command[6] = 0x00;      //delay between frames   
00395     command[7] = S1;        //Sector address - 3 bytes
00396     command[8] = S2;
00397     command[9] = S3;
00398     
00399     writeCOMMAND(command, 10);
00400 }